Add JNI registration Attach API

[dev-jonghoonpark]

related issue: #11103

I resolved an issue where using the attach method in an application built with native-image resulted in the error:
java.lang.UnsatisfiedLinkError: Can't load library: attach

---

Additionally, during implementation, I discovered that in applications built with native-image, VirtualMachine.list() returns an empty list.
(This was not addressed in this PR.)

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[roberttoyonaga]

I tested out and the funcitonality seems to be working. I used this procedure:

1. Build your branch
2. javac SimpleShortAttachClient.java
3. mx native-unittest SimpleShortAttachClient
4. java -m jdk.httpserver (In another terminal)
5. jcmd and find the PID of jdk.httpserver
6. jcmd PID ManagementAgent.status verify the management agent is off
7. ./simpleshortattachclient PID (This should cause the Native Image binary to attach and start the management agent in the other JVM)
8. jcmd PID ManagementAgent.status verify the management agent is on

$ jcmd
2205600 org.jetbrains.idea.maven.server.RemoteMavenServer36
2225971 jdk.httpserver
2125315 com.intellij.idea.Main
2225998 jdk.jcmd/sun.tools.jcmd.JCmd

$ jcmd  2225971 ManagementAgent.status
2225971:
Agent: disabled

$ ./simpleshortattachclient 2225971
PID.. 2226067
{sun.java.command=jdk.httpserver, sun.jvm.flags=, sun.jvm.args=-Djdk.module.main=jdk.httpserver}
{sun.java.command=jdk.httpserver, sun.jvm.flags=, sun.jvm.args=-Djdk.module.main=jdk.httpserver}


$ jcmd  2225971 ManagementAgent.status
2225971:
Agent: enabled

Connection Type: remote
Protocol       : rmi
...

[dev-jonghoonpark]

Thank you for sharing the detailed testing procedure.
I also used a similar approach during my development.